Crown jewels: The fabulous rings which sealed the love of Europe's royal couples

In 2003, Denmark's handsome young prince Frederik proposed to his Australian love Mary Donaldson three years after their first meeting. And fittingly for his striking bride-to-be, the crown prince presented her with an eye-catching engagement ring – an emerald cut diamond nestled between two emerald cut ruby baguettes

In 2003, Denmark's handsome young prince Frederik proposed to his Australian love Mary Donaldson three years after their first meeting. And fittingly for his striking bride-to-be, the crown prince presented her with an eye-catching engagement ring – an emerald cut diamond nestled between two emerald cut ruby baguettes